Kepler-18
Kepler-18 c
Rank #3363 of the ranked catalogue · Discovered by Transit in 2011
HZ 0%measured
0.085
Earth-2.0 index
0.173
Earth Similarity Index
0%
Habitable-zone probability
5.49 R⊕
Radius
Planet
Mass17.300 M⊕measured
Bulk density0.590 g/cm³
Orbital period7.6416 days
Semi-major axis0.07520 au
Eccentricity0.000
Incident flux126.081 S⊕
Equilibrium temperature851.8 K
Transit-time σ at 203041.6 minLinear propagation of published epoch and period errors; not a ranking input.
Maximum angular separation0.17 masReflected-light contrast 9.25e-7 at Aᵍ = 0.30 and Lambertian quadrature.
Composite parameter sources4 · mixedThe archive may select different publications for different parameters; mixed-source is disclosed, not automatically penalised.
Default-solution coverage83%0% median composite-to-default difference over shared parameters.
Host star & system
HostKepler-18
Spectral typeG
Effective temperature5345 K
Radius1.108 R☉
Mass0.972 M☉
Distance433.0 pc / 1412.4 ly
DiscoveryTransit, 2011